Yaltomata darcyana
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| Yaltomata darcyana | ||||||||||||
| Mione |
Jaltomata darcyana is a plant type from the genus jaltomata in the family of the nightshade family (Solanaceae).
description
Vegetative characteristics
Jaltomata darcyana is an herbaceous plant with a height of up to 1 (rarely up to 1.5) meters. The stems are hollow, green to purple, and conspicuously angled with four or five raised longitudinal edges. At the base of the plant, the stems can reach a diameter of up to 2.5 centimeters. The leaves are alternate, often in pairs. The leaf blade is somewhat leathery, elliptical, the lower part wedge-shaped, mostly pointed towards the front and up to 30 centimeters long. The ratio of width to length is 1: 1.5 to 1: 1.8. Both leaf surfaces are hairless and shiny. The leaf margin is entire or almost entire and on young leaves sparsely ciliate with up to 0.1 millimeter long trichomes . The leaf stalks are up to 2.5 inches long.
Inflorescences and flowers
The inflorescences are umbels of up to 23 flowers . They are in the leaf axils or in the branches of the stem axis. The inflorescence stalks are up to 2.1 inches long, the flower stalks up to 2.3 inches. They are green, hairless and with raised longitudinal edges. During the flowering period, the calyx is green, 5.2 to 7.4 millimeters long and 12 to 14 millimeters in diameter. The axis of the sepals is raised, near the tip are one to three-cell trichomes with a length of 38 to 138 micrometers. On the outside of the calyx there are plenty of 60 to 75 millimeters long, stalked glands. When the fruit ripens, the calyx enlarges to a diameter of up to 26 millimeters, is star-shaped, green, flat or slightly bent back and does not cover the fruit. The crown is wheel-shaped, light green with dark green spots, which as a whole have a star-shaped outline. It usually has a diameter of 17 to 20 millimeters and can be up to 25 millimeters in size in cultivated specimens. The edge of the crown is lashed with trichomes up to 190 micrometers long. On the inside there are dense, upright, glandular-pointed trichomes from (rarely four) five to six cells with a length of 210 to 290 micrometers. The outside is hairy with stalked glands 70 to 80 microns in length.
The stamens are straight or almost straight and almost hairless. Only at the base are a few colorless trichomes up to 0.3 millimeters in length. The anthers are 1.4 to 1.9 millimeters long, measure 1.0 to 1.8 millimeters in diameter and are colored yellow. The pollen grains have a diameter of 25 to 27.5 micrometers, 74,000 to 149,000 pollen grains were counted per flower. In contrast to the related species Jaltomata procumbens and Jaltomata repandidentata, the anthers open on the first day of flowering. The ovary is dark green and is surrounded at the base by a cream-colored to light orange flower base . About 158 to 168 ovules are formed per ovary compartment . The stylus is 4.2 to 5.1 millimeters long and curved so that the scar points to the side. The scar itself is green, head-shaped and has a weak groove in the middle. Herbarium specimens range in size from 0.33 to 0.51 millimeters. Colorless nectar drops collect at the transition between crown and androeceum .
Fruits and seeds
The fruits are blue-black, almost spherical berries with a diameter of 14 millimeters. The seeds are almost egg-shaped.
Distribution and locations
The species grows along the Pacific coast of the Nicoya Peninsula in Costa Rica at altitudes between 0 and 320 meters in temporarily dry locations.
proof
- Thomas Mione and Leon Yacher: Jaltomata (Solanaceae) of Costa Rica . In: RC Keating, VC Hollowell and TB Croat (Eds.): A Festschrift for William G. D'Arcy, The Legacy of a Taxonomist . Monographs in Systematic Botany from the Missouri Botanical Garden Press, Volume 104. 2005. pp. 117-130.
Web links
- Jaltomata darcyana on the website of Thomas Mione